Symphonium Crimson VS qdc 8PRO

IEM Comparison: Expert & Community Scores Side-by-Side

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Symphonium Crimson and qdc 8PRO use 4BA and 8BA driver setups respectively. Symphonium Crimson costs $1,500 while qdc 8PRO costs $1,540. qdc 8PRO is $40 more expensive. Symphonium Crimson holds a clear 0.5-point edge in reviewer scores (8.4 vs 7.9). Symphonium Crimson has better bass with a 0.6-point edge, qdc 8PRO has better treble with a 0.5-point edge, qdc 8PRO has significantly better dynamics with a 1-point edge and Symphonium Crimson has better imaging with a 0.5-point edge.

Insights

Metric Symphonium Crimson qdc 8PRO
Bass 8.6 8
Mids 7.7 7.5
Treble 7.5 8
Details 8.1 8
Soundstage 8.3 7.9
Imaging 8.5 8
Dynamics 7 8
Tonality 8.1 7.8
Technicalities 8.3 8
Take these comparisons with a grain of salt—we don't have enough qdc 8PRO reviews saved yet to provide an unbiased result.

Symphonium Crimson Aggregated Review Score

Average Reviewer Scores

Average Reviewer Score:

8.4

Very Positive


qdc 8PRO Aggregated Review Score

Average Reviewer Scores

Average Reviewer Score:

7.9

Strongly Favorable


Reviews Comparison

Symphonium Crimson reviewed by Smirk Audio

Smirk Audio 7.9 Reviewer Score
A Tuning
A+ Tech
Excellent bass, dynamics, and resolution. Very large soundstage with great imaging. Mid/upper-treble may be too elevated for some.

Smirk Audio original ranking

Smirk Audio Head-Fi Profile

Bass: A+ Mids: A Treble: A- Dynamics: A+ Details: A+ Imaging: S-

qdc 8PRO reviewed by Smirk Audio

Smirk Audio 7.9 Reviewer Score
A Tuning
A+ Tech
check links for more info:

Smirk Audio original ranking

Smirk Audio Head-Fi Profile

Bass: A+ Mids: A Treble: A+ Dynamics: A+ Details: A+ Imaging: A+

Symphonium Crimson (more reviews)

Symphonium Crimson reviewed by Z-Reviews

Z-Reviews 9.5 * score rescaled + normalized
Youtube Video Summary

Symphonium Crimson lands with a bang: a four–BA, four-way crossover design that somehow delivers epic energy without a dynamic driver. Tonality reads neutral-bright with thunderous sub-bass—not a basshead hump, but a slab of solid, deep extension that stays clean. Mids stay clear for vocals and strings, treble rises for sparkle and excitement, and the presentation spreads out like pulled-apart audio “shreds” across a big canvas. The effect is clarity, detail, and slam that feel bigger than the driver count suggests, making music and film scores straight-up addictive.

Technical notes matter here. Nominal impedance is a weirdly low ~6Ω, so source pairing can swing results; the set scales and sounds happiest on robust gear that can keep low-impedance loads stable. Despite the armature array, coherency stays intact, dynamics hit harder than expected, and volume headroom invites goosebumps. It’s not a “bass monster,” yet the sub-bass authority and lively treble make it exciting rather than polite, with imaging that feels wide and tactile.

Ergonomics are the gripe list: the short nozzle can challenge seal and the premium cable lacks a formed ear hook, encouraging twist and loosening—tip rolling (even reversed-orientation tricks) helps. Build is flashy—carbon-fiber shell, red inlays, metal case that’s too hefty for travel. Pricing sits around $1,500 (or $1,700 with 8-wire cable); for sheer fun, impact, and best-in-brand performance, the value argument holds. For all-day softness, something like Twilight stays comfier; for movies, big scores, and “wow” sessions, Crimson feels like a must-grab and arguably the best Symphonium to date.


Z-Reviews original ranking

Z-Reviews Youtube Channel

Symphonium Crimson reviewed by Jays Audio

Jays Audio 9 Reviewer Score
S Tuning
S Tech
U-shaped/Slight V/W Shaped. Energetic treble. Great tech. Fun signature.

Jays Audio original ranking

Jays Audio Youtube Channel

Symphonium Crimson reviewed by Yifang

Yifang 8.5 Reviewer Score
S- Tuning
S- Tech

Symphonium Crimson reviewed by Nymz

Nymz 8.5 Reviewer Score
A+ Tuning
S- Tech
Great bass, holographic stage and top of the shelf dynamics. Probably my favourite rendition of a W-shaped tuning to this date. Treble might be spicy for some, but using Divinus Velvets (stock black) seem to help a lot.

Nymz original ranking

Nymz Website

Bass: S Mids: A+ Treble: A+ Details: A+ Imaging: S

Symphonium Crimson reviewed by Shuwa-T

Shuwa-T 8.4 Reviewer Score
A+ Tuning
S- Tech
The bassier Helios with no sacrifices to clarity

Shuwa-T original ranking

Shuwa-T Website

Bass: S- Mids: A+ Treble: S- Soundstage: S- Details: S- Imaging: S-

Symphonium Crimson reviewed by Precogvision

Precogvision 8 Reviewer Score
A+ Tuning
A+ Tech
Colored tonality done correctly with incredible bass and dynamics. Upper-treble can be slightly too zingy depending on source.

Precogvision original ranking

Precogvision Youtube Channel
Bass: S Mids: A+ Treble: A- Dynamics: A+ Details: A+ Imaging: A+

Symphonium Crimson reviewed by Jaytiss

Jaytiss 7.8 Reviewer Score
B+ Tuning
A- Tech
Suffers from BA bass, and super Zingie Treble.

Jaytiss original ranking

Jaytiss Youtube Channel
Mids: A- Treble: A- Dynamics: C+ Soundstage: A+

Symphonium Crimson reviewed by Head-Fi.org

Head-Fi.org 8.3 * score rescaled + normalized
29 community members have rated the Symphonium Crimson at an average of 4.4/5 on Head-Fi. Overall sentiment: Excellent.

URL to full Review

Head-Fi.org original ranking

Symphonium Crimson User Review Score

Average User Scores

Average User Score: n/a

Based on 0 user reviews

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qdc 8PRO User Review Score

Average User Scores

Average User Score: n/a

Based on 0 user reviews

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Symphonium Crimson Gaming Score

Gaming Score & Grade

  • The gaming score is prioritizing technical capabilities of the IEM (Separation, Layering, Soundstage) and good value.

Gaming Score

7.2

Gaming Grade

A-

qdc 8PRO Gaming Score

Gaming Score & Grade

  • The gaming score is prioritizing technical capabilities of the IEM (Separation, Layering, Soundstage) and good value.

Gaming Score

6.4

Gaming Grade

B

Symphonium Crimson Scorings

Average Technical & Tuning Grades

Average Tunign Grade

A+
  • Tuning feels refined, blending frequencies with convincing realism and engagement. Transitions between registers feel effortless.

Average Technical Grade

A+
  • It sounds refined and controlled, keeping instruments neatly separated with immersive staging. Busy arrangements remain neatly organized.
Bass S-
Expect a gripping low-end presence that marries clarity with visceral impact. Dynamic swings land with thrilling force.
Mids A
The mid band shines with organic tone and finely rendered textures. Long sessions remain fatigue-free.
Treble A
Highs feel superbly executed, revealing micro-detail without hint of sibilance. Highs stay smooth even at volume.
Dynamics A-
Dynamic performance is excellent, combining sharp transients with strong contrast. Transients snap with authority.
Soundstage A+
A panoramic, wraparound presentation suspends each element in a convincingly airy bubble. Instruments float with pinpoint spacing.
Details A+
Exceptional resolution that uncovers the deepest layers while maintaining natural timbre. It uncovers hidden layers with ease.
Imaging S-
Even dense mixes remain locked in place, reinforcing the illusion of physical performers. The stage remains stable regardless of complexity.
Gaming A-
Good fundamental spatial awareness for most gaming scenarios. Handles basic positioning well but may lack nuance in complex situations. Bad value-to-cost for gaming purpose - not recommended

qdc 8PRO Scorings

Average Technical & Tuning Grades

Average Tunign Grade

A
  • Tuning feels well executed, keeping a natural flow across the spectrum. Switching genres feels seamless.

Average Technical Grade

A+
  • A very capable technical display delivers articulate layers and poised imaging. It portrays reverbs and echoes with confidence.
Bass A+
You hear powerful yet disciplined low-end slam that extends effortlessly. It marries sub-bass depth with great texture.
Mids A
The mids sound lush and articulate, capturing emotion effortlessly. Strings and keys shimmer with realism.
Treble A+
Expect a radiant top end that paints every sparkle with precision. Harmonics soar without turning edgy.
Dynamics A+
Dynamic range is superb, blending powerful impact with nuanced control. It captures both whisper and roar effortlessly.
Details A+
No subtlety is too small; the presentation exposes it all with composure. Complex tracks remain crystal clear.
Imaging A+
The stage breathes like a real environment, surrounding you with believable depth. There's a strong sensation of physical space.
Gaming B
Decent spatial awareness for fundamental positioning. Creates satisfying atmosphere in story-driven games while handling basic directional cues. Bad value-to-cost for gaming purpose - not recommended

Symphonium Crimson User Reviews

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qdc 8PRO User Reviews

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